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Finding the Fourth Proportional to 19,918.48, 29,883.48 and 8,225.68

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Solution

The fourth proportional to 19,918.48, 29,883.48 and 8,225.68 is: 12,340.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.48 : 29,883.48 = 8,225.68 : x
  2. Step 2: Convert to fraction form
    19,918.48/29,883.48 = 8,225.68/x
  3. Step 3: Cross multiply
    19,918.48x = 29,883.48 × 8,225.68
  4. Step 4: Simplify right side
    19,918.48x = 245,811,943.77
  5. Step 5: Solve for x
    x = 245,811,943.77/19,918.48
  6. Step 6: Final answer
    x = 12,340.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.